WHITE PAPER | Mobility

Reference Architecture for Mobile

Device and App Management

Using Citrix XenMobile MDM and the

Mobile Solutions Bundle to create a

unified mobile solution

www.citrix.com

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Contents

Overview ......................................................................................................................................................... 4

Mobile Solutions Bundle ................................................................................................................................... 4

XenMobile Device Manager (MDM) .......................................................................................................... 5

XenMobile SMG ........................................................................................................................................ 5

XenMobile SharePoint DLP ..................................................................................................................... 5

CloudGateway ................................................................................................................................................ 5

AppController ............................................................................................................................................. 5

Access Gateway .......................................................................................................................................... 5

StoreFront ................................................................................................................................................... 5

ShareFile ...................................................................................................................................................... 6

Reference Environments .................................................................................................................................. 7

XenMobile MDM .......................................................................................................................................... 8

MDM Firewall Ports .................................................................................................................................. 9

MDM Server Specifications .................................................................................................................... 10

XenMobile MDM with NetScaler option ................................................................................................. 11

Mobile Solutions Bundle ............................................................................................................................. 12

CloudGateway Firewall Ports ................................................................................................................. 14

CloudGateway Server Specifications ......................................................................................................... 14

CloudGateway Enterprise Scalability .................................................................................................... 15

CloudGateway – XenDesktop Integration ............................................................................................... 16

CloudGateway - Multi-Store Option ..................................................................................................... 17

High Availability – XenMobile MDM + CloudGateway ....................................................................... 18

Mobile Solutions Bundle with NetScaler .................................................................................................. 20

Reference Environment Infrastructure ........................................................................................................ 21

3

Network Layout ........................................................................................................................................... 21

Server Hardware ........................................................................................................................................... 21

Authentication .............................................................................................................................................. 22

Certificates ..................................................................................................................................................... 22

DNS ............................................................................................................................................................... 23

SQL Server .................................................................................................................................................... 24

Exchange Server and XenMobile Secure Mobile Gateway .................................................................... 24

Conclusion ........................................................................................................................................................ 25

Appendix A – Reference Documents ........................................................................................................... 26

Appendix B - Firewall port requirements ..................................................................................................... 27

XenMobile MDM ........................................................................................................................................ 27

CloudGateway .............................................................................................................................................. 28

4

Overview

The Citrix® Reference Architecture for Mobile Device and App Management guides architects in designing the

next generation of mobile device and application management services. These services allow IT

organizations to gain control over the proliferation of mobile devices in the enterprise. The Mobile

Solutions Bundle provides a solution that securely delivers mobile, web, Windows® apps, and data

to all devices in the enterprise. The Mobile Solutions Bundle is the first step in making mobility a

strategic advantage rather than a security liability. This document is for IT architects looking to

implement and manage their mobility infrastructure. Each of these validated architectures has been

certified by Citrix to perform and scale to the most demanding enterprise requirements.

Mobile Solutions Bundle

The Mobile Solutions Bundle combines XenMobile MDM, security and management of mobile end-

points with CloudGateway, a self-service enterprise app store for business apps, and data to provide

a complete mobile solution. Each of these components includes infrastructure components that will

be described in detail in the following sections.

XenMobile MDM

o XenMobile Device Manager

o XenMobile SMG

o XenMobile SharePoint DLP

CloudGateway

o AppController

o Access Gateway

o StoreFront (Windows Desktops and Apps)

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XenMobile Device Manager (MDM)

XenMobile MDM offers advanced mobile device management capabilities like provisioning,

automated compliance, and features that make mobile apps “business-ready”. With a “one-click”

dashboard, simple administrative console, and real-time integration with Microsoft® Active

Directory XenMobile MDM simplifies device administration across the enterprise.

XenMobile MDM provides the ability to manage the device lifecycle across every major platform,

including iPhone, iPad, Android, BlackBerry, Symbian, and Microsoft Windows 8. It offers out-of-

the-box support for BYOD programs or corporate mobile initiatives.

XenMobile SMG

XenMobile Secure Mobile Gateway (SMG) provides the ability to protect mobile email with

MDM policies. It lets mobile users view encrypted attachments in a secure viewer and keeps

sensitive corporate data from leaking outside of enterprise control on iOS and Android

devices.

XenMobile SharePoint DLP

XenMobile SharePoint DLP (Data Leak Prevention) provides SharePoint access to mobile

devices via MDM policies. This feature gives IT administrators control over the devices that

have access to SharePoint data while the native mobile app, Citrix Mobile Connect, provides

the interface and security to view the documents.

CloudGateway

Citrix CloudGateway is an enterprise mobility management solution that securely delivers mobile,

web, Software as a Service (SaaS), Windows apps, and data to any device. It empowers employees

with a self-service enterprise app store that provides access to business apps and data, leveraging the

consistent, rich user experience of Citrix Receiver.

AppController

AppController provides access to web, SaaS, mobile apps, and ShareFile. This component

allows IT to protect enterprise apps and data with policy-based controls, such as restriction

of application access to authorized users, automatic account de-provisioning for terminated

employees and remote wipe for data and apps stored on lost devices.

Access Gateway

NetScaler Access Gateway provides secure remote access from outside the corporate

network while maintaining the highest level of protection for sensitive corporate data.

StoreFront

6

StoreFront, the next-generation of Web Interface, provides a set of services used by Receiver

to enable access to AppController and XenDesktop.

ShareFile

Citrix ShareFile is a cloud based follow-me-data solution. ShareFile enables users to securely

store, sync and share data, both within and outside the organization. Using ShareFile with

CloudGateway provides IT with enterprise directory integration capabilities for easy,

enterprise-wide provisioning and deployment of user accounts.

7

Reference Environments

This document will guide IT administrators through proven architectures based on the enterprises

mobile device and application management requirements. The following environments have been

validated as reference architectures.

XenMobile MDM

XenMobile MDM – Secure Proxy

Mobile Solutions Bundle

Mobile Solutions Bundle – XenDesktop (XD) integration

Mobile Solutions Bundle – Multi-Store

Mobile Solutions Bundle – High Availability

Mobile Solutions Bundle – NetScaler as proxy

Determining the correct architecture will be based on the device or app management requirements

of the enterprise. The components of the bundle are modular and build upon each other. The

following table displays architectures based on the mobile technologies. Before making a decision it

is important to determine the following:

What level of management is required, App vs. Device or both?

What types of apps need to be managed and deployed?

What data strategy is required, SharePoint or ShareFile?

XenMobile MDM

Mobile Solutions Bundle

Mobile Solutions Bundle

XD Integration

Device Security Control X X X

Device Provisioning X X X

Native App Delivery X X X

SharePoint Integration X X X

Web/SaaS App Delivery X X

Mobile MDX Apps X X

ShareFile Integration X X

Mobile App Policies X X

Mobile App Mgmt. X X

Win Apps/Desktops X

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XenMobile MDM

Figure 1 – XenMobile MDM Reference Architecture

1. XenMobile Device Manager (MDM) is the central server for MDM that combines

policies, devices, and users to create deployments to manage the corporate mobile strategy.

Devices connect to MDM over ports 80, 443, and 8443 (only during device

enrollment for iOS).

MDM runs on a Windows Server 2008 R2. It is recommended to follow the

Microsoft security best practices for Windows Servers in the DMZ.

The MDM Server requires connections to backend infrastructure components like,

Active Directory, DNS, SMTP, SQL Server, and a certificate authority.

MDM also requires a PKI service like Microsoft Certificate Authority or it can use its

own PKI service hosted on the MDM Server that gets installed with Device

Manager. Device Manager will use this service to push out client certificates to

devices for client certification authentication to MDM. Client certificates are

deployed automatically during device enrollment.

It is recommended to use SQL Server, Express, Standard, or Enterprise for a

production environment. Reference the following link for supported Windows and

SQL versions.

9

2. The SharePoint connector is an optional component of XenMobile MDM that provides

access to SharePoint sites. This requires external access to your SharePoint server by either

placing the SharePoint server in the DMZ or utilizing a load balancer in the DMZ with

access to the SharePoint server. This functionality can be configured in a MDM policy

allowing the Citrix Mobile Connect app to host the SharePoint data in a secure viewer on the

mobile device.

3. XenMobile Secure Mobile Gateway (SMG) provides protected mobile email through

MDM policies. This can be installed on an Exchange Client Access Server (CAS) or in the

DMZ on a Microsoft Forefront or Threat Management Gateway (TMG) server. Basic

operation requires access to Exchange, MDM, and mobile devices over HTTPS (443). SMG

will query the MDM Server to check policies for user and device access.

4. The Apple Push Notification Service (APNS) is used by MDM to push notifications to

iOS devices for configuration and policy updates. This is service provided by Apple and is

only required for iOS devices. Non-iOS devices have their own push implementation.

Note: A special APNS certificate that is signed by Citrix and issued by Apple is required

before installing MDM. Please see installation instructions.

MDM Firewall Ports

The following ports need to be open to allow MDM to communicate with internal and external

resources.

Figure 2 - XenMobile MDM Communication Paths

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MDM Server Specifications

All components of the MDM architecture can be installed on physical or virtual machines. The

following table describes the resource requirements to support 5000 devices for each of the

components in the MDM architecture.

Virtual Machine vCPU Memory (GB) Disk Space (GB)

XM Device Manager 2 - 4 4 24

Secure Mobile Gateway 2 2 24

XM SQL Server 2 6 24

Enterprises requiring scalability greater than 5,000 devices will need to adjust server specifications to

match the parameters in the table below.

Devices XenMobile MDM Server SQL Server

5,000 2 vCPU, 4 GB RAM 2 vCPU, 6 GB RAM

10,000 4 vCPU, 8 GB RAM 4 vCPU, 16 GB RAM

20,000 8 vCPU, 16 GB RAM 16 vCPU, 24 GB RAM

40,000 16 vCPU, 32 GB RAM 32 vCPU, 64 GB RAM

The MDM and database servers can be clustered for high availability, please reference the High

Availability section for more details on clustering the MDM components. Database backup and

recovery should be performed according to the organization’s data center policy.

Tomcat TCP connections also need to be taken into consideration:

Devices Port 443 Port 8443 Port 80 Max Threads

Up to 10,000 400 30 20 12

Over 10,000 750 50 50 20

If the TCP connections are getting close to 750, then consider clustering the MDM Server.

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XenMobile MDM with NetScaler option

An alternative and more secure deployment for MDM is to use a hardware load balancer like

NetScaler in front of all the MDM components. In the architecture, the NetScaler is load balancing

all HTTP and HTTPS traffic to MDM, SMG, and SharePoint.

Figure 3 – XenMobile MDM with NetScaler

There are several reasons to do this:

Limit exposure to Windows Servers in the DMZ

Easily scale out by adding more servers behind NetScaler in the future

Additional NetScaler features can be enabled to further increase security (e.g., application

firewalls)

Configuration Tip: On the NetScaler device ensure SSL persistence is enabled and set to

SSLSESSION for the HTTPS load balancing virtual servers (443 and 8443).

12

Mobile Solutions Bundle

CloudGateway, a component of the Mobile Solutions Bundle, includes Access Gateway,

AppController, and optionally, StoreFront (for XenDesktop and XenApp integration). The

following components are highlighted in this architecture:

AppController

Access Gateway

In this environment, MDM and CloudGateway are installed side-by-side, complementing each other.

MDM provides the device management and control with policies while CloudGateway provides

MDX capabilities and secure remote access to enterprise resources. The following diagram

highlights the CloudGateway infrastructure components.

Figure 4 – Mobile Solutions Bundle Reference Architecture

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1. Access Gateway - NetScaler Access Gateway is used for remote access and can be installed

in the form of a NetScaler hardware appliance (MPX or SDX) or a VPX (virtual appliance

that runs on XenServer, VMware, or Hyper-V). This infrastructure component resides in the

DMZ and is the central access point into the enterprise network. For extra security, two-

factor authentication using RADIUS as a secondary authentication method is supported for

services such as RSA® SecurID or Symantec® VIP products.

2. AppController - AppController is a Linux-based hardened VPX appliance that can be

deployed on XenServer or ESX. In this configuration, remote access is available using

Access Gateway, but internal users can access AppController directly with the Receiver or

Receiver for Web. AppController includes a version of Receiver for Web on the same

server to allow mobile and desktop receivers to access apps without the addition of a

StoreFront server. AppController requires connections to LDAP, DNS, NTP, and SMTP

servers. SMTP is required for workflow approval through email notification.

AppController integrates with ShareFile (ShareFile account with SSO enabled is required) by

provisioning Active Directory users to the ShareFile cloud service, providing Single Sign-on

(SSO) to the data service using SAML authentication.

3. Citrix Receiver - Citrix Receiver is client software that lets you access your data,

applications, and desktops from any device including smartphones, tablets and PCs.

Receiver can be downloaded from the device’s app store or pushed to the device from

XenMobile MDM.

14

CloudGateway Firewall Ports

In addition to the XenMobile MDM firewall ports in the previous environment, the following ports

need to be opened for the CloudGateway infrastructure components. Ports 1494 and 2598 will only

need to be opened if XenDesktop or XenApp is integrated (shown in next environment).

Figure 5 – CloudGateway Firewall Ports

CloudGateway Server Specifications

All components of CloudGateway can be configured and hosted as virtual machines. The

AppController virtual machine (VM) is a virtual appliance that runs on XenServer and VMware®

ESXi. Access Gateway VPX is a virtual appliance that delivers the same features and functionality as

the MPX physical appliance. Access Gateway VPX is a virtual workload that is deployed on its own

hardware. The following table details the minimum resource requirements.

vCPU Memory (MB) Disk Space (GB)

Access Gateway VPX 2 4096 20GB

App Controller 2 4096 50GB

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CloudGateway Enterprise Scalability

CloudGateway can support enterprises with thousands of users by selecting the appropriate

NetScaler Access Gateway hardware appliance. As the number of users authenticating, using mail

and web resources and app activity through MicroVPN increase (Figure 6) the power of the

NetScaler Access Gateway infrastructure component will need to be increased. Please refer to the

figure below to select the appropriate configuration for your environment. These results are based

on an AES encryption algorithm with a 1024bit key size. Scalability results will differ based on

encryption algorithm and key sizes.

Sample user profile used for results below:

Single connection per user

Using only @WorkMail app

Traffic usage is approximately 2.5 MB/min per user

Figure 6 – CloudGateway User Scalability (@WorkMail)

For more information on the NetScaler hardware appliances used in these tests please refer to the

following knowledgebase article.

0

10,000

20,000

30,000

40,000

50,000

60,000

70,000

VPX50MBs

VPXUnlimited

MPX 5500 MPX 7500 MPX 10500 SDX 21500

550 875

7500

16250

37500

62500

# o

f U

sers

CloudGateway User Scalability / NetScaler Appliance

Access

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CloudGateway – XenDesktop Integration

Figure 7 – CloudGateway - XenDesktop integration

1. Access Gateway – Access Gateway provides access to XenDesktop/XenApp HDX

sessions, access to web/SaaS and mobile apps are delivered from the AppController. The

additional configuration needed for this setup of Access Gateway is providing the Secure

Ticket Authority (STA) URLs for XenDesktop/XenApp to the Access Gateway. This will

allow pass-through authentication to Windows desktops and apps. TCP ports 1494 and

2598 need to be opened for ICA/CGP traffic between AG and XenDesktop/XenApp.

2. StoreFront – For access to Windows desktops and apps, StoreFront needs to be placed in

front of the AppController and XenDesktop components. StoreFront provides resource

aggregation. It will enumerate apps from XenDesktop, XenApp, and AppController to

show the user one consolidated list of resources: Windows apps, desktops, mobile apps,

web/SaaS apps, and data. In this configuration, Storefront needs to know how to pass

device-specific information to AppController like device enrollment information and key

management. These services need to be configured in the web.config file for proper

communication between all three servers. Please follow these instructions for proper

configuration.

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3. XenDesktop – Link the XenDesktop broker or XenApp XML service to complete the

integration with CloudGateway.

CloudGateway - Multi-Store Option

An alternative deployment option exists for organizations that have not yet consolidated Windows

desktops and apps using StoreFront. In this scenario, Access Gateway is upgraded to version 10

and a separate Access Gateway virtual server is created to support the Mobile Solutions Bundle. If

that is not possible yet, another configuration is to setup a separate Access Gateway 10 server for

AppController and leave the older AG setup untouched. Either configuration requires Citrix

Receiver to have two stores configured, one for XenDesktop/XenApp using PN Agent Server and

one for AppController. Citrix Receiver has been enhanced to easily switch between the two stores

without having to re-authenticate each time. You will only have to authenticate once for each store.

Figure 8 – CloudGateway – Multi Store Option

1. Access Gateway has to be upgraded first to v10.0.71.6014e or later. Creating a second AG

virtual server will require a separate public URL, public IP, and certificate.

2. Web Interface/PN Agent Server – There are no changes required for PN Agent Server in

this environment. Web Interface Server v5.4 is the only version supported.

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High Availability – XenMobile MDM + CloudGateway

This architecture provides a fully redundant XenMobile MDM and CloudGateway environment.

Figure 9 - High Availability - XenMobile MDM + CloudGateway

1. Access Gateway HA Mode – In this environment NetScaler devices are configured in high

availability mode. A high availability (HA) deployment of two NetScaler appliances can

provide uninterrupted operation in any transaction. With one appliance configured as the

primary node and the other as the secondary node, the primary node accepts connections

and manages servers while the secondary node monitors the primary node. If, for any

reason, the primary node is unable to accept connections, the secondary node takes over.

For more information, please follow this link.

2. StoreFront HA Mode – StoreFront HA mode is similar to the MDM server setup. It

requires a separate SQL server (SQL server should have its own clustered environment) and

a hardware load balancer like NetScaler. Ports 80 and 443 will need to be configured on the

load balancer with SSL session persistence turned on for SSL connections. It is

recommended to have multiple connection broker URLs and STA URLs for

XenDesktop/XenApp connections. For more information, please follow this link.

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3. AppController - Two AppController VMs can be deployed in a high availability

configuration. The first AppController on which high availability is configured is called the

primary, and the other instance is called the secondary. In this deployment, the primary

AppController listens for requests, serves user requests, and synchronizes its data with the

data on the secondary AppController. The two VMs work as an active-passive pair, in which

only one VM is active at a time. If the primary AppController stops responding for any

reason, the secondary AppController takes over, becoming the active VM and begins to

service user requests. As the active VM, the secondary AppController also synchronizes

system and database information by using a client-server mechanism. A client on the active

AppController VM shares the necessary information to a virtual server on the passive

AppController as a series of requests. The virtual server parses the requests and performs

the necessary action. A virtual IP is required; this will be the FQDN AppController address

used when configuring StoreFront and Access Gateway in a CloudGateway deployment.

For more information, please follow this link.

4. XenMobile MDM HA Mode– XenMobile MDM can be configured with multiple servers

load-balanced behind a NetScaler appliance or another hardware load-balancing solution. In

this environment, ports 80, 443, and 8443 are load-balanced. For SSL connections (ports

443 and 8443), make sure to turn on SSL session persistence in the load balancing rules.

MDM requires a shared SQL server and NTP configured on each server.

Note: This configuration is more secure as the MDM servers are located in the internal

network behind the Access Gateway.

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Mobile Solutions Bundle with NetScaler

This environment shows NetScaler being a transparent proxy for all MDM components as well as

enabling Access Gateway for the CloudGateway components. This is an alternative to having

multiple servers in the DMZ.

Figure 10 - Mobile Solutions Bundle with NetScaler

In the NetScaler configuration, Load Balancing is used as a proxy for each component. In this case,

only one server is used for each balancer. Here is a sample configuration for a component server:

Figure 11 – NetScaler Load Balancing Configuration

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Reference Environment Infrastructure

In the XenMobile and CloudGateway reference architectures; there are many supporting servers and

services that are required for operation in an enterprise environment. The following section details

the common infrastructure components (storage, virtualization environment, servers, networking

equipment, etc.) and how the XenMobile and CloudGateway reference architectures integrate with

them.

Network Layout

Figure 12 - Network Layout for Reference Environments

Server Hardware

XenServer Hosts Dell PowerEdge C6100

The Dell C6100 contains 4 physical servers enclosed in a 2U form factor with

each server having the hardware specifications listed below:

2 – Intel Xeon E5620 Processors

64GB RAM

500GB HDD

2 – physical machines configured in HA (High Availability) mode

2 – 1Gb Ethernet Adapters

XenServer

Configuration

2 – servers configured in a virtualization pool for HA (High Availability)

XenServer version 6.1.0-59235p

Three separate VLANs configured: o VLAN 30 – Storage VLAN configured for 9000 MTU for fast

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connectivity to backend NFS storage. o VLAN 10 – User/Management traffic VLAN configured for

standard 1500 MTU. Please note that it is best practice for XenServer to further segregate User and Management traffic by creating additional VLANs in high traffic implementations.

o VLAN 50 – DMZ VLAN to provide access from outside the enterprise network.

Storage

NetApp 2240-2

7.2TB total configurable storage

Active/Active Controller configuration

4.5TB NFS configured storage volume

~250GB used for complete virtualized environment

2 - 10Gb Ethernet (10GbE) Adapters

Network Cisco C3560X

Cisco ASA 5520

Authentication

Active Directory running on Windows Server 2008 R2 was used for all reference architecture

environments. Active Directory, or LDAP, support is different for each product. Both

AppController and XenMobile MDM do not support users in nested groups. Another limitation for

AppController is that it only supports a single forest environment. Please check each product’s

documentation for full support requirements.

The reference environments also make use of two factor authentication configured on Access

Gateway to provide secure access to the internal corporate resources using RADIUS authentication

from Symantec Validation and ID Protection. Using two-factor authentication will require an extra

port to be opened on the firewall (typically UDP/1812) from DMZ (AG) to the RADIUS server

(internal).

More information on configuring two-factor authentication can be found here.

Certificates

Wildcard and SAN certificates are supported for all Citrix products. In most deployments, only two

wildcard or SAN server certificates are required:

1) External - *.extcompany.com

2) Internal - *.intdomain.net

The following table shows the certificates required and format needed for each component. A

simple utility like OpenSSL can be used to convert certificate formats. A separate SAML Certificate

23

will be needed depending on the SAML authentication enabled apps that are published in

AppController.

Certificate format Certificates Required Location

Access Gateway PEM Server*, root CA External

AppController PEM or PFX

(PKCS#12)

Server, SAML, root CA Internal

StoreFront PFX (PKCS#12) Server, root CA Internal

XenMobile MDM PFX(PKCS#12) APNS, server. MDM will create its

own PKI service or use Microsoft

CA for client certificates.

External

XenMobile SMG PFX (PKCS#12) Server, root CA External

*It is recommended to make this a public (3rd party) cert so mobile devices won’t need to download

the company’s private root CA first.

DNS

It is recommended to use static IPs for all servers in the environment. As configured in the

reference environment the following records were added to the DNS server.

Servers DNS Location Record

XenMobile MDM Internal and External Host (A)

Access Gateway

(AG Vserver IP address)

Internal and External Host (A)

AppController Internal Host (A)

StoreFront Internal Host (A)

XenMobile SMG Internal and External Host (A) and Mail (MX)

SharePoint DLP Internal and External Host (A)

Configuration Tip: Make sure that the FQDN of every server from every other server, especially

Access Gateway can be resolved and pinged.

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SQL Server

SQL server (Express, Standard, and Enterprise) are supported for all the products in the Mobile

Solutions Bundle. It is important to plan accordingly and size the SQL server based on number of

devices, applications and users that will be using the environment. The same SQL Server may be

used for the different products. It is recommended to size the SQL server based on the MDM

requirements. The impact of StoreFront on SQL is minimal. Please refer to the individual

architectures for sizing recommendations.

Exchange Server and XenMobile Secure Mobile Gateway

In the reference environment, a Microsoft Exchange 2010 server was used to provide access to

secure mail from XenMobile Secure Mobile Gateway. A full exchange server 2010 implementation

includes 5 roles; there are 3 main roles that need to be configured:

The Mailbox Server which is the backend server that hosts mailboxes.

The Hub Transport server that routes mail and handles mail flow.

The Client Access Server (CAS) which is an edge server that accepts connections to

Exchange server from a variety of clients.

Although all 3 roles mentioned above are required as per the reference design, more details on the

CAS role are included here as the physical placement of this role on a server in the topology, and the

integration with XenMobile SMG is important.

XenMobile SMG is installed on the CAS and works to manage policy based device access to email

by intercepting ActiveSync traffic using the built-in ISAPI filters provided by the CAS server. The

CAS role is a middle-tier server that accepts connections to Exchange server from a variety of

clients. This server hosts the protocols used by all clients when checking messages. On the local

network, Outlook MAPI clients are connected directly to the Client Access server to check mail.

Remote users can check their mail over the Internet by using Outlook Anywhere, Outlook Web

App, Exchange ActiveSync, POP3, or IMAP4. While the CAS role placement is usually dictated by

the placement of the Exchange Server Mailbox server, it is recommended as per the reference

architecture that the CAS role be installed on a stand-alone server that is separate from the

Exchange mailbox server and it resides in the DMZ. Having the CAS server placed in the DMZ

adds an additional layer of security to the implementation by avoiding the need to place the mailbox

server in the DMZ. Instead the CAS server can communicate with the Exchange server residing on

the internal network over secure communications.

25

Conclusion

The Citrix Mobile Solutions Bundle is an enterprise mobility management solution that enables

complete and secure mobile device, app and data freedom. Employees gain quick, single-click access

to all their mobile, web, datacenter and Windows apps from a unified app store, including beautiful

productivity apps that seamlessly integrate to offer a great user experience. The solution provides

identity-based provisioning and control for all apps, data and devices, policy-based controls, such as

restriction of application access to authorized users, automatic account de-provisioning for

terminated employees and selective wipe of apps and data stored on lost, stolen or out-of-

compliance devices. With the Mobile Solutions Bundle, IT can meet users’ desire for device choice

while preventing data leakage and protecting the internal network from mobile threats.

Figure 13 - Citrix Mobile Solutions Bundle Reference Architecture

26

Appendix A – Reference Documents

Storefront 1.2

http://support.citrix.com/proddocs/topic/dws-storefront-12/dws-version-wrapper.html

Netscaler 10.0

http://support.citrix.com/proddocs/topic/netscaler/ns-gen-netscaler10-wrapper-con.html

Access Gateway:

http://support.citrix.com/proddocs/topic/access-gateway/ag-edocs-landing.html

AppController 2.5

http://support.citrix.com/proddocs/topic/appcontroller-25/clg-appc-landing-page-d-con.html

XenMobile Device Manager

http://kb1.zenprise.com/Zenprise_Device_Manager

Secure Mobile Gateway (AKA Active-Synch Controller)

http://kb1.zenprise.com/Zenprise_Device_Manager/Zenprise_Device_Manager/Secure_Mobile_

Gateway

Installation guide – Microsoft Client Access Server

http://technet.microsoft.com/en-us/library/ff622319(v=exchg.141).aspx

Microsoft Client Access Reference for Exchange 2010

http://technet.microsoft.com/en-us/library/ff622319(v=exchg.141).aspx

Microsoft Exchange 2010 Installation Guide Download (Includes instructions for all required roles)

http://www.microsoft.com/en-us/download/details.aspx?id=17206

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Appendix B - Firewall port requirements

XenMobile MDM

TCP Port

Description Source Destination

25

By default, the MDM SMTP configuration of the Notification Service uses port 25. However, if your corporate SMTP server uses a different port, make sure that your corporate firewall does not block that port.

XenMobile MDM Corporate SMTP

Server

80

Over-the-Air (OTA) Enrollment and Agent Setup (Android and Windows Mobile)

Internet

XenMobile Device Manager Server

Over-the-Air (OTA) Enrollment and Agent Setup (Android and Windows Mobile), MDM Web Console, MDM Remote Support Client

Corporate LAN and Wi-Fi

MDM Server Enterprise App Store connection to Apple® iTunes App Store (ax.itunes.apple.com). Used for publishing recommended iTunes App Store apps from the available iOS applications within the Web Console and iOS Mobile Connect App

XenMobile MDM

Apple iTunes

App Store

(ax.itunes.apple.com)

80 or 443

XenMobile Device Manager Nexmo SMS Notification Relay outbound connection

XenMobile MDM Nexmo SMS Relay

server

389 or 636

LDAP/LDAPS connection from MDM Server to Directory Service Host (Active Directory Global Catalog server or equivalent LDAP directory service host)

XenMobile MDM LDAP / Active

Directory Services

443

SSL OTA Enrollment/Agent Setup (Android and Windows Mobile), All Device-related traffic and data connections (iOS, Android and Windows Mobile)

Internet

XenMobile MDM SSL OTA Enrollment/Agent Setup (Android and Windows Mobile), All Device-related traffic and data connections (iOS, Android and Windows Mobile), MDM Web Console

Corporate LAN and Wi-Fi

1433 Remote database server connection to separate SQL Server (Optional)

XenMobile MDM SQL Server

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2195

Apple APNS (Push Notification Service) outbound connection to gateway.push.apple.com, used for iOS device notifications and device policy push

XenMobile MDM Internet (Apple

APNS Service Hosts on public IP

network17.0.0.0/8) 2196

Apple APNS (Push Notification Service) outbound connection to feedback.push.apple.com, used for iOS device notifications and device policy push

5223

Apple APNS (Push Notification Service) outbound connection from iOS devices connected via Wi-Fi network to *.push.apple.com

iOS device on Wi-Fi network service

8443 Over-the-Air (OTA) Enrollment for iOS Devices only

Internet

XenMobile MDM Corporate LAN and Wi-Fi

1Corporate LAN traffic outbound to DMZ and the Internet is assumed to be allowed

CloudGateway

TCP

Port Description Source Destination

80 Mobile Application download Access Gateway AppController

443

Connections to Storefront Services for

Enterprise edition access to We, Mobile,

SaaS and Desktop Applications

Access Gateway StoreFront

Connections to AppController for Web,

Mobile and SaaS application delivery Access Gateway AppController

Secure Ticket Authority (STA) Access Gateway Citrix XD / XA

Servers

389,

636 or

3268

LDAP/LDAPS connection from

NetScaler AG to Directory Service Host

(Active Directory Global Catalog server

or equivalent LDAP directory service

host)

Access Gateway

LDAP / Active

Directory

Services

53 DNS Access Gateway DNS Server

29

123 NTP Services Access Gateway NTP Server

1494 Citrix ICA Protocol Access Gateway Citrix XD / XA

Servers

2598

Citrix ICA/CGP Protocol

When Session Reliability is enabled, TCP

port 2598 replaces port 1494

Access Gateway Citrix XD / XA

Servers

1Corporate LAN traffic outbound to DMZ and the Internet is assumed to be allowed

30

About Citrix

Citrix (NASDAQ:CTXS) is the company transforming how people, businesses and IT work and

collaborate in the cloud era. With market-leading cloud, collaboration, networking and virtualization

technologies, Citrix powers mobile work-styles and cloud services, making complex enterprise IT

simpler and more accessible for 260,000 enterprises. Citrix touches 75 percent of Internet users each

day and partners with more than 10,000 companies in 100 countries. Annual revenue in 2011 was

$2.21 billion. Learn more at www.citrix.com.

©2013 Citrix Systems, Inc. All rights reserved. Citrix® is a trademark or registered trademark of

Citrix Systems, Inc. and/or one or more of its subsidiaries, and may be registered in the United

States Patent and Trademark Office and in other countries. All other trademarks and registered

trademarks are property of their respective owners.